Improvement in scaffold-clamps



W. C. FELLOWS.

Scaffold-Clamp.

No 162,541 FatentedApril27J875.

Ill!

WITNESSB INVENTOB a4! 1 .2 v ATTORNEYS. I

THE GRAPHIC C0.PHOTO-LITH.39 8&4] PARK PLACLMY.

UNITED STATES PATENT OFFICE,

WILLIAM G. FELLOWS, OF TOLEDO, OHIO, ASSIGNOR TO HIMSELF AND CHARLESWHITTINGHAM, OF SAME PLACE.

IMPROVEMENT IN SCAFFOLD-CLAMPS.

Specification forming part of Letters Patent No. 162,541, dated April27, 1875; application filed January 4, 1875.

To all whom it may concern:

Be it known that I, WILLIAM G. FELLOWS, of Toledo, in the county ofLucas and State of Ohio, have invented a new and useful Improvement inScaii'olds, of which the following is a specification:

The invention will first be fully described, and then pointed out in theclaim.

In the accompanying drawing, Figure 1 is an elevation of a scaffold,constructed according to my invention. Figs. 2, 3, 4 are detail views ofthe bracket.

Similar letters of reference indicate corresponding parts.

A represents the wall of the building; B, the cross-trees; O, theuprights, usually termed scaffold-poles. D is the base or foot of theuprights, being in the form of a cross, which allows the upright tostand alone, instead of being supported by hand, in building thescaffold. E is a bracket, which slides up and down on the upright,-andwhich supports one end of the cross-tree, the other end being supportedin the wall, as seen in the drawing. This bracket consists of a band, F,which slips over the uprights, with a key, Gr, fastened therein by thepin H. The upper inner edge I of the band is serrated to prevent theband ,from slipping on the upright. Confined by the bolt or pin H is aneccentric arm, J, in a recess, K, of the key G. This arm may be made inany form. L represents teeth, which penetrate the upright and secure thebrackets. As the weight of cross-tree and scaffold bears on the key theband is cramped on the up-' right, the serrated edge I penetrates thewood, and the arm J as the load is put upon the scafl'old workseccentrically on the pin H, and increases the resistance. A spring maybe placed behind the arm, if desired.

l/Vith this adjustable sliding bracket a scaffold may be constructed inmuch less time than is ordinarily required, the uprights and bracketsbeing used over and over, and are always ready.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

The combination of band F, having notches I, recessed key G, andkey-pivot H, having end-ratcheted arm J L, all constructed and arranged,as shown and described, to form an adjustable scaifold-bracket.

WILLIAM G. FELLOWS.

Witnesses I. I. NEwToNE, I. P. PUGSLEY.

